Phone: (011) 7541-421, 3409-301, 3409-335, 6547-293, 3409-310
E-mail: Standards sales: prodaja@iss.rs Education: iss-edukacija@iss.rs Information about standards: infocentar@iss.rs
Stevana Brakusa 2, 11030 Beograd
Main menu

ISO 9101:1987

Surface active agents — Determination of interfacial tension — Drop volume method

Nov 26, 1987
95.99   Withdrawal of Standard   May 19, 2025

General information

95.99     May 19, 2025

ISO

ISO/TC 91

International Standard

71.100.40  

French   English  

Buying

Withdrawn

Language in which you want to receive the document.

Scope

The volume of a drop of an aqueous phase formed at the end of a vertical capillary tube is measured when it detaches from the tube in contact with the organic phase. The interfacial tension between two liquid phases is obtained by balancing the weight of the drop with the interfacial tension force supporting it and applying a correction factor. Then the interfacial tension is calculated from the volume of the falling drop, the outer capillary radius, the density difference between the two liquid phases and the acceleration due to gravity.

Life cycle

NOW

WITHDRAWN
ISO 9101:1987
95.99 Withdrawal of Standard
May 19, 2025

National adoptions

Surface active agents — Determination of interfacial tension — Drop volume method

95.60   Close of voting

H091 more